Stanchion locking mechanism



Oct. 10, 1933. J. B. oLsN 1,929,790

STANCHION LOCKING MECHANISM Filed April 24, 1930 @11 www Patented Oct. 10, 1933 .lohn E. Olson,` Fortto 1.lames Atkinson,

Application April 24,

Mani.liacturing Company, is., a corporation of Wisconsin' Atkinson, Wis., assigner Fort 1930. Serial No. 446,823

4. claim. (o1. nia- 147) My invention relates lto improvements in stanchion locking mechanism.V

The'primary robject of my invention is to provide means for adjusting and locking a stanchion from a point suiiiciently distant from the sov Y' are arcuate due to the fact animal to avoid danger of personal injury', said mechanism being s'o constructed as to allowit to be adjusted and locked withinl the" smallest possible time interval. v

Further objects are to "provide a stanchion locking mechanism which cannot be released by Y the animal, which' cahbe at all times adjusted to either the locking or'the unlocking' position, andthe associated stanchion openedl or closed, by a simple movement of a lever in two-directions; also to4 provide durable andinexpensive stanchion operating and locking mechanism which can be employed to swing either or both oi the stanchion bars to closed or open position, and in whichample leverage may for moving the bar or bars against pressure such asthe animal may be" exerting upon it and which might otherwise prevent the'desired movement. K

In the drawing y A r Figure 1 is an exterior isometric View of a portion of the corner of `a pen for cattle,`equipped with my invention;v l

Figure 2 is a plan'view of the same. Figure 3 is a View of the locking plates and associated parts, in the position' which they occupy when'thestanchion is closed.

Figure 4 'is an elevational view of 'the lparts Yshown in Fig. 3 as seen vfrom Athe left hand side in Fig. 2, the upper frame bar being shown in section taken to line 4 4 of Fig. 2. v

Figure 5 is a seotion`taken to line 5-5 of Fig. 4.`

Like parts are identified by the same reference characters throughout the severall views.

In Fig. 1y the stanchionV comprises a pair of bars l0 and 1l having their lower ends pivoted at 12 to clamping brackets 13 engaged with the lower bar 14 Aor a pen frame. The upper ends of the bars and 11 are loosely engaged with the upper bar 15 of the pen frame, preferably by means of forked heads 16.

In the construction shown, the bars 14 and 15 that the stanchion is manger (not shown) associated with a corner individual pens for commonly employed for cattle. y

The particular structure of the pen and oi the stanchion is not material to the invention herein claimed, and further illustration or descripbe obtained .tion 'thereof is deemed unnecessary, point vout that the sliding heads 16 at the upper ends of thestanchion bars 10 and llare provided witha plurality of bolt apertures 18 to facilitate coupling the adjusting mechanism thereto as hereinafter explained.

At a point remote from the stanchion almetal bearing plate 20 is secured to the stanchion frame. It may be attached to an upper bar 21 or thepen frame, which bar, in the construction shown, is an upper frame bar of the pen at `one side of the corner in which the illustrated stanchion is located.r I preferably provide this bar Y2l with a bracket 22 clamped to rod 21 and hav- Aing a raised central portion 23 upon .which the Vplate 2li may be mounted and connected by a bolt 25, the plate 2O beingy upwardly offset in :the portion that fits; over the, raised center 23 kexcept to oi the klcracketg22, whereby the plate 20 may be vrotating and to relieve'the bolt 25 -from undue strain., Y

The upwardly offsetxportion 26 of the bracket v 20 serves as a platform or bearing upon which an oscillatory stanchion adjusting plate 27 is mounted and ,held which serves` to retain the plate 27 in position l'while allowing it to oscillate upon the bolt in turn-table relation to the bearing plate 20. l .The 'fixed bearing plate 20fis provided with a pair lof notches 30 and 31. l g Y Y The oscillatory plate 27'is forked at one end and provided with upturned flanges 29 to which an' operating lever 33 is pivoted by means 'of a cross bolt or pin 34. 'This lever 33 is adapted to swing into and out of either of the notchesA 30 -and 31 when in registry therewith, and .when in engagement with one of the notches it occupies a vertical position of suspension from its pivotal connection 34. It will be obvious that by swinging the lever 33 to a horizontal position it will be released'irom the relatively xed plate 20, and.

it maythen be used to oscillate plate 27 about the axis of the pivot bolt 25.

'Ihe respective ends of the plate 27 are attached to the stanchion bars 10 and 11 by'connecting rods136 and 37. The connectingrrods have double knuckle joint connection with the stanchion head 16, the couplings 38 having an upwardly extending pivot bolt 39 and a horizontal pivot bolt 40, the latter extending through one of the holes 18 in the stanchion head.

At their opposite ends pivoted to vertically extendingbolts 42 carried by the plate 27.Y It will therefore be obvious that interlocked with `the bracket to prevent it from by the bolt and a nut 28 the connecting rods are Y Y of animal retaining position, only one connect-v by oscillating the plate 27 from the position in which it is shown in Fig. 1, to the position in which it is shown in Fig. 3, the stanchion bars 10 and 11 may be actuated in opposite directions and caused to approach each other to the dotted line position indicated in Fig. l, which is the animal retaining position.

It will be observed that the rod 36 is pivoted to one of the fork arms of the plate 27. By providing an aperture 45 inthe other fork arm, the plate is made reversible so that it can be used at either the rightv or the left hand side of the stanchion. When used at the right hand side, the connecting rod 35 will have its pivot bolt 42 inserted through the aperture 45.

It will of course be understood that the operating lever 33 will normally be held by gravity in the locking position. Pressure exerted by the animal upon the stanchion bars will of course be transmitted to the plate 27, but no excessive strain will be exerted upon the pivotal connection of the lever for the reason that the lever 'substantially ts lthe 'space between the flanges v29, and the notches 30 and 31 are of substantially the same width as the diameter of the lever with proper clearance to allow the lever to swing freely into and out of the notches. The two plates being in contact with each other, the lever itself will resist any tendency of one plate to oscillate upon the other, without material strain upon the'pivot pin.

It will of course be understood that where only one stanchion bar is to be swung into and out ing rod will be required, and this may be connested at either end of the oscillatory plate 27 to suit the requirement of the installation. Ordinarily'a longer movement will be required if but one stanchion bar is adjusted to retain or release the animal. The length of movement will of course depend upon the distance between the axis Aabout which plate 27 oscillates and the point at which the connecting rod is secured thereto. Therefore, the'length of the plate will depend upon the degree of the desired movement of theassociated stanchion bar or bars.

The field of movement oi each stanchicn vis determined by the location of the bolt 40,

and whereboth bars are to be'swung, the degree of their separation and approach may be varied by. shifting the bolts 4G from one hole 18 to another.

The plate 27 constitutes a double acting crank -having a folclable actuating `arm which, when folded for engagement in either oi the notches 30-or 31, operates as a latch or locking member.

of points.

I claim:

1. The combination with a penirame having upper and lower arcuate frame bars, of a plurality of stanchion bars pivoted to said lower frame bar, stanchion adjusting mechanism, including a notched catch plate iiXedv with said upper frame bar, a crank plate mounted thereon and centrally pivoted thereto, stanchion adjusting linkage pivoted to the respective end portions of the crank plate and operatively connested to upper portions of said stanchion bars, and an operating arm pivoted to the crank plate at right angles to its axis and adapted to interlock withthe catch plate in a plurality of positions of crank plate adjustment.

2. The combination with a pen frame having arcuate upper and lower frame bars, a set of stanchion bars pivoted to the lower frame bar and having their upper vends slidingly engaged with the upper frame bar, and laterally distant support mounted on the pen frame and'provided with a bearing surface,` a cranlplate centrally pivotedfor oscillation on said bearing surface and having portionson opposite sidesof said pivotal connection linked respectively to the stanchion hars, and a latch arm pivoted to said crank plate for swinging movement .in a plane perpendicular thereto, said arm and Vbearing plate being adapted. for interlocking engagement when the arm is-,in one position of swinging adjustment.l Y

3. 1n a stanchion adjusting mechanism, a rotative crank plate having aradially extending slot flanked byupset iianges, and anoperating arm'pivotally connected with said anges and adapted for swinging movement into and out. of said slot, said crank plate being adapted Vfor connection with stanchion adjusting linkage onV opposite sides of the slot and near the margin of the plate on the opposite side of its axis of rotation from that occupied by thev slot.

The combination withthe'upper frainebar of`A a stanchion frame, of av bracket` having its ends connected therewith and its intermediate portion upwardly offset, a bearingplate formed 1.20 to interlock Vwith the upwardly oiset portion of the bracket and provided with a notched margin, a crank'plate inv turn-table relationtoth'e bearing plate, said crank plate, bearing plate and bracket being connectedtogetherby a pivotbolt, and an operating arm pivoted to the crank plate and adapted by downwardrmovement to .engage with a registering notchin the bearing plate, v saidcranlr plate being adapted for connection with stanchion adjusting linkage at a `plurality iis l JOHN B. oLsoN." 

